Biomaterial Database

Analysis of congenital deciduous teeth absence and its permanent teeth phenotype. 2023

Fenfang Qiu, and Zichun Tang, and Shan Meng

Dept. of Pediatric Dentistry, The Affiliated Stomatological Hospital of Soochow University, Suzhou 215000, China.

OBJECTIVE This study aimed to investigate the clinical characteristics of congenital deciduous teeth absence and its permanent teeth performance type by using panoramic radiographs. METHODS A total of 15 749 panora-mic radiographs of 3-6-year-old children with deciduous dentition were collected from January 2020 to December 2021. The incidence of congenital deciduous teeth absence was observed, and the abnormality of permanent teeth was recor-ded. SPSS 24.0 software was used for statistical analysis. RESULTS The incidence of congenital deciduous teeth absence was 2.54% (400/15 749), which was found in 217 girls and 183 boys, and the difference between the genders was statistically significant (P=0.003). The absence of one and two deciduous teeth accounted for 99.75% (399/400) of the subjects. In addition, 92.63% (490/529) of mandibular deciduous lateral incisor was congenitally absent, 44.80% (237/529) of deciduous teeth was absent in the left jaw, and less than 55.20% (292/529) was absent in the right; the difference between them was statistically significant (P=0.017). The absence of 96.41% (510/529) deciduous teeth in the mandibular was significantly more than that of 3.59% (19/529) in the maxillary, and the difference between was statistically significant (P=0.000). Furthermore, 68.00% (272/400) and 32.00% (128/400) of deciduous teeth were absent in unilateral and bilateral, respectively, and the difference was statistically significant (P=0.000). Four types of congenital deciduous teeth absence with permanent teeth were observed as follows: 1) 73.91% (391/529) of permanent teeth was absent; 2) 20.60% (109/529) of permanent teeth was not absent; 3) the number of fused permanent teeth accounted for 4.91% (26/529); 4) the number of supernumerary teeth was 0.57% (3/529). CONCLUSIONS Although the absence of congenital deciduous teeth is less common than that of permanent teeth, it affects deciduous and permanent teeth to some extent. Dentists should pay attention to trace and observe whether abnormalities are present in the permanent teeth and take timely measures to maintain children's oral health.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D005260	Female		Females
D005671	Fused Teeth	Two teeth united during development by the union of their tooth germs; the teeth may be joined by the enamel of their crowns, by their root dentin, or by both.	Double Tooth,Fused Mandibular Incisors,Incisors, Fused Mandibular,Teeth, Fused,Fused Mandibular Incisor,Incisor, Fused Mandibular,Mandibular Incisor, Fused,Mandibular Incisors, Fused,Tooth, Double
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000848	Anodontia	Congenital absence of the teeth. It may involve all (total anodontia) or only some of the teeth (partial anodontia, hypodontia), or six or more of the teeth (oligodontia) and both the deciduous and the permanent dentition, or only teeth of the permanent dentition.	Dental Agenesis, Familial,Familial Dental Agenesis,Familial Tooth Agenesis,Hypodontia,Oligodontia,Partial Anodontia,Total Anodontia,Hypodontia Oligodontia 1,Tooth Agenesis, Familial,Tooth Agenesis, Selective, 1,Agenesis, Familial Dental,Agenesis, Familial Tooth,Anodontia, Partial,Anodontia, Total,Familial Dental Ageneses,Familial Tooth Ageneses,Oligodontia 1, Hypodontia,Oligodontias,Partial Anodontias,Total Anodontias
D014071	Tooth Abnormalities	Congenital absence of or defects in structures of the teeth.	Odontome,Abnormalities, Teeth,Abnormalities, Tooth,Teeth Abnormalities,Abnormality, Teeth,Abnormality, Tooth,Odontomes,Teeth Abnormality,Tooth Abnormality
D014094	Tooth, Deciduous	The teeth of the first dentition, which are shed and replaced by the permanent teeth.	Primary Tooth,Tooth, Primary,Baby Teeth,Baby Tooth,Dentition, Deciduous,Dentition, Primary,Milk Teeth,Milk Tooth,Primary Teeth,Teeth, Deciduous,Teeth, Primary,Deciduous Dentition,Deciduous Dentitions,Deciduous Teeth,Deciduous Tooth,Dentitions, Deciduous,Dentitions, Primary,Primary Dentition,Primary Dentitions,Teeth, Baby,Teeth, Milk,Tooth, Baby,Tooth, Milk
D014096	Tooth, Supernumerary	An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption.	Molar, Fourth,Teeth, Supernumerary,Fourth Molar,Fourth Molars,Molars, Fourth,Supernumerary Teeth,Supernumerary Tooth
D019229	Dentition, Permanent	The 32 teeth of adulthood that either replace or are added to the complement of deciduous teeth. (Boucher's Clinical Dental Terminology, 4th ed)	Dentition, Adult,Dentition, Secondary,Adult Dentition,Permanent Dentition,Secondary Dentition